Home / 193,511.97-290,380.10-81,182.25

Finding the Fourth Proportional to 193,511.97, 290,380.10 and 81,182.25

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Solution

The fourth proportional to 193,511.97, 290,380.10 and 81,182.25 is: 121,820.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,511.97 : 290,380.10 = 81,182.25 : x
  2. Step 2: Convert to fraction form
    193,511.97/290,380.10 = 81,182.25/x
  3. Step 3: Cross multiply
    193,511.97x = 290,380.10 × 81,182.25
  4. Step 4: Simplify right side
    193,511.97x = 23,573,709,467.31
  5. Step 5: Solve for x
    x = 23,573,709,467.31/193,511.97
  6. Step 6: Final answer
    x = 121,820.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.